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ExAI

ExAI

An AI Assistant Plugin for Minecraft Server

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Compatibility

Minecraft: Java Edition

1.20
1.19
1.18
1.17
1.16
1.15
1.14
1.13
1.12

Platforms

Creators

Details

Licensed ARR
Published last month

ExAI — AI Assistant Plugin for Minecraft

ExAI brings an LLM-powered, in-game AI assistant to your Minecraft server. It quickly builds your server's knowledge base through automatic uploads and chat monitoring, and uses RAG to give accurate, server-specific answers. Everything happens inside a chest GUI — no command memorization required.

Project: https://github.com/Crossroadscodes/MC-ExAI

Features

  • Chest GUI assistant — players talk to the AI through a clean menu, no chat spam.
  • Public chat response — auto-replies to questions in public chat via keyword triggers (configurable cooldown); stays silent when no grounded answer is available to avoid spam.
  • Auto knowledge collection — watches the "ask → answer → thanks" flow in public chat and automatically queues AI‑vetted Q&A pairs for OP review.
  • Player knowledge submission — players submit Q&A using a written book → AI pre‑filters junk → OP approves/rejects in GUI → approved entries go into the vector store.
  • Reward system — Vault currency + custom items granted upon approval.
  • RAG semantic retrieval — uses DashScope text-embedding-v3 (1024‑dim) with adjustable similarity threshold.
  • OP tools — chat history viewer, knowledge base editor, one‑click promotion of chat logs to knowledge.
  • Flexible storage — switch between MySQL and pure local YAML via storage.type; zero database setup for small servers.
  • LLM backend — OpenAI‑compatible API (default Aliyun DashScope/Qwen, easily swappable for OpenAI, DeepSeek, etc.).
  • Low cost — achieved via configurable cooldown settings and output truncation to minimize AI calls.

Screenshots

Main menu — Start a chat Hover the player head and click to begin a single-turn dialogue with the assistant.

Start Chat

Start Chat

Main menu — Upload knowledge

Main menu — Single-turn chat notice

The paper item shows usage info and the current cooldown.

Upload Knowledge

Upload Knowledge

Click the book to receive a writable book; fill in Q: ... A: ... and close it to submit for review.

Main menu — Reviewer panel (OP)

Reviewer Panel

Open the per-page review GUI. Left-click to approve (writes to the knowledge base and pays rewards), right-click to reject.

Main menu — Chat history (OP)

Chat history

Browse player questions and AI replies; left-click to edit and promote a record into the knowledge base, right-click to delete.

Main menu — Knowledge base (OP)

knowledge base

View and edit every accepted entry. Left-click to edit, right-click to delete; the knowledge base auto-reloads.

Public chat in action

Public chat in action

Type a question with a configured keyword (?, how, what, etc.) and the assistant replies on broadcast.

Commands & Permissions

Command Description /exai opengui Open the assistant GUI /exai question <player> <q> Send a question to a player (OP) /exai reload Reload config (OP) /exai help Show help Permission node: exai.op (knowledge review).

Quick Setup

  1. Drop ExAI.jar into plugins/.
  2. Start the server once → edit plugins/ExAI/config.yml:
  3. Choose storage.type: yml (default, no DB) or mysql.
  4. If mysql, fill in MySQL credentials.
  5. Fill in your LLM API key (llm.apiKey).
  6. Adjust assistant name / language / rewards.
  7. (Optional) Edit plugins/ExAI/knowledge.yml to seed your knowledge base.
  8. /exai reload.

Storage modes

  • yml (default)
  • mysql

Requirements

  • Spigot/Paper 1.12.2 or compatible
  • Java 8+
  • MySQL 5.7+ — only if storage.type: mysql
  • Vault — optional, for currency rewards
  • An OpenAI-compatible LLM endpoint + embedding endpoint